The Mueller report wasn't looking for collusion. That's literally the President changing the narrative. The Mueller report was looking into election tampering by a foreign power and it find that the Trump organization had numerous people that broke tons of established laws footing the course of running the campaign, including the President who incited action by a foreign power against a political opponent. How Republicans aren't running screaming from a guy who brags about committing literal treason I don't know. He's not even in line with traditional Republican values, he's not Christian, doesn't hate lgbtq people, has no problem with wasting government money, and hurts cheap labor by trying to close the border. His only real stated goal has been weakening the U.S government. A foreign power couldn't ask for a better mole inside the government.